Laminated cohesive interwound fabric constructed in tubular and annular form.



L. A. SUBERS.

LAMINATED OOHESIVE INTERWOUND FABRIC GONSTRUOTED IN TUB APPLICATION FILED APR,1,1914.

ULAR AND ANNULAR FORM.

' 1,1 fifi fifin Patented Mar. 23, 1915.

2 SHEETSSHEBT 1.

. L. A. SUBERS. LAMINATED GOHESIVE INTERWOUND FABRIC OONSTRUGTED IN TUBULAR AND ANNULAR FORM.

APPLICATION FILED APR.1, 1914.

Patented Mar. 23 1915.

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Quantification of Letters Patent.

Fatented Main". 23, third" npplication nee a n 1, 1914. semi in. mm.

To all whom z't may cones-m:

Be it known that I, LAWRENCE A. Scenes,

.a citizen of the United Statesand resident of Cleveland, the county of Cuyahoga and State of Ohio, have invented certain new and useful improvements in Lanunated Cohesive lnterwound Fabric Constructed in Tubular and Annular Form, of which I here by declare. the following to be a full, clear, and exact description such as will enable others skilled in the art to which it appertains to make and use the same.

The objects of the invention are to provide an improved form of fabric from which a pneumatic tire for an automobile or other vehicle can be produced, or an annular tube for any purpose, and in which the completed fabric is constructed in a tubular and annular form, whereby no molding or stretching of the fabric is required to make it conform to the shape of the rim of'a vehicle wheel, and therefore no distortion or ten sion is put upon the component members of the rabric.

"The invention is an improi 'ement upon the construction of the laminated, cohesive,

interwound fabric described in my proir Letters Patent No. 1,021,014: granted'to me upon March 26th, 191-2, and upon the construction of the band shown and described a in my prior Letters Patent upon improveis found in the adjustability of the amount of expansrve and elongation obtained in. a

tubular fabric under internal or external pressure by this mode of construction, since the amount of elongation in the component bands can be controlled. by modifying the angle at which the component fibers are laid therein and also the amount of expansion and elongation in the completed fabric tube is susceptible of control by modifying the angle at which. the bands are laid in the fabric. This fabric has hitherto been constructed in tubular shape upon a straight mandrel, and has been slit lengthwise to form a sheet of fabric of any desired length, the circumference of the tube being equal to the width desired. When used for tire fabric, this sheet has been stretched around the v tire core until the edges of the fabric have conformed to the circumference .at the side of the tire and the middle of the fabric has been expanded. to correspond to the larger circumference of the tread side. lhus the bands have been stretched laterally, and distorted from their previous angular positions, and their fibrous members have been displaced and separated and subjected to an initial tension. Hence the expansibilityof the fabric when incorporated in a tire has been so afi'ected by the distortion of 'the fabric as to reduce its strength and resiliency. To overcomc these objectionable fea tures, the cohesivebandsQconstructed as .de scribed in the prior patents are given the proper form and are then Wound and laminated upona mandrel of annular shape andpreferably of circular cross section, the outside diameter of the annular mandrel being approximately equal to the outside diameter of the core upon which the fabric is placed in constructing the tire, sothat the fabric thus needs practically no stretching or shaping to conform it to the shape of tire core.

The band is narrow or taper from 'a'certa-in width in a certain distance to predetermined smaller.

wvidth and then to gradually increase in a so formed as to gradually similar distance to its original width, thus having continuously and regularly recurring wide portions and narrow portions. These wide portions and narrow portions are so spaced that when the bands are wound diagonally around the annular mandrelthe wide portions will always come upon theedges of the adjoining parallel rows of.

rive the iieterminecl re cls in fiiKl with practically no initial strain 65 v upei ion G desired. The entire tire se the pre eion or" i by any thickness of rubber or be vulcanized to form a homoge neous: a bet-initially integral structure with the comnonent ban ens of i it Well knownfnct that wherein a z an cut e ders i {MM in rtln lying out herein rter ed shown H1 the accern'pei .lly pointed '3 previou;

and specii .11

this i writ The invention ecrih ing's claims.

In. the ecceinne tron ier 1e inner circumference or :ippliccl to abric and sepur erein arouncl the outer incl :11

orm

Any flat sheet of f and tubular fabri corn- 85 layer of laminated cohering fabric to it] le of the o.

bed the invention Wl .v and desire to secure by' Letters s diagonally nd therein, one se .L L. g the 1"- 4311 so forcing the "fabric to deecri annular :1 mid band Won around the circun'iference of the tire core to spaced series of bands, one series crossing g the bands crossnnd filling the spaces between 100 same series, said bands being the outer circumference to the ference of said. fabric, substanlescri n cuncl' (l ound "oin ry and tapering thence to the 110 iny ENCE r. SUBERS.

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uinfercnce of said fabric.

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